KR20020044231A - 표면 품질이 우수한 냉연강판의 제조방법 - Google Patents
표면 품질이 우수한 냉연강판의 제조방법 Download PDFInfo
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- KR20020044231A KR20020044231A KR1020000073221A KR20000073221A KR20020044231A KR 20020044231 A KR20020044231 A KR 20020044231A KR 1020000073221 A KR1020000073221 A KR 1020000073221A KR 20000073221 A KR20000073221 A KR 20000073221A KR 20020044231 A KR20020044231 A KR 20020044231A
- Authority
- KR
- South Korea
- Prior art keywords
- rolled steel
- cold rolled
- surface quality
- steel sheet
- annealing
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/663—Bell-type furnaces
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
구분 | 화학성분(중량%) | 기계적 특성(kgf/㎟) | 표면품질 | ||||||||
C | Si | Mn | S | sol. Al | Cr | YS | TS | El(%) | 흑연 | 도금성 | |
발명강1 | 0.020 | 0.01 | 0.40 | 0.010 | 0.30 | 0.040 | 18.3 | 30.5 | 42 | 미석출 | 양호 |
발명강2 | 0.045 | 0.01 | 0.25 | 0.020 | 0.035 | 0.050 | 19.5 | 31.3 | 41 | 미석출 | 양호 |
발명강3 | 0.060 | 0.03 | 0.60 | 0.015 | 0.050 | 0.060 | 20.3 | 32.3 | 39 | 미석출 | 양호 |
발명강4 | 0.090 | 0.02 | 0.70 | 0.017 | 0.020 | 0.070 | 22.7 | 35.3 | 36 | 미석출 | 양호 |
발명강5 | 0.050 | 0.03 | 0.25 | 0.018 | 0.045 | 0.100 | 19.8 | 32.0 | 40 | 미석출 | 양호 |
비교강1 | 0.046 | 0.04 | 0.22 | 0.022 | 0.060 | - | 19.3 | 32.3 | 42 | 석출 | 불량 |
비교강2 | 0.020 | 0.05 | 0.15 | 0.025 | 0.070 | 0.010 | 18.1 | 30.4 | 43 | 석출 | 불량 |
비교강3 | 0.086 | 0.06 | 0.48 | 0.030 | 0.075 | 0.020 | 22.5 | 35.6 | 36 | 미세석출 | 열위 |
비교강4 | 0.050 | 0.07 | 0.50 | 0.027 | 0.065 | 0.120 | 22.0 | 33.2 | 32 | 미석출 | 양호 |
Claims (1)
- 냉연강판의 제조방법에 있어서,중량%로, C: 0.010~ 0.15%, Si: 0.03%이하, Mn: 0.15~ 0.90%, S: 0.020%이하, sol. Al: 0.020~ 0.050%, Cr: 0.03~ 0.10%, 나머지는 Fe 및 기타 불가피한 불순물로 조성되는 강 슬라브를 통상의 방법으로 열간압연후, 600℃이하에서 저온 권취하고, 50~ 80%의 압하율로 냉간압연한 다음, 630~ 720℃의 온도에서 40시간 이상 상소둔함을 특징으로 하는 가공성 및 표면 품질이 우수한 냉연강판의 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2000-0073221A KR100514788B1 (ko) | 2000-12-05 | 2000-12-05 | 표면 품질이 우수한 냉연강판의 제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2000-0073221A KR100514788B1 (ko) | 2000-12-05 | 2000-12-05 | 표면 품질이 우수한 냉연강판의 제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20020044231A true KR20020044231A (ko) | 2002-06-15 |
KR100514788B1 KR100514788B1 (ko) | 2005-09-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR10-2000-0073221A KR100514788B1 (ko) | 2000-12-05 | 2000-12-05 | 표면 품질이 우수한 냉연강판의 제조방법 |
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KR (1) | KR100514788B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100812051B1 (ko) * | 2006-11-08 | 2008-03-10 | 현대하이스코 주식회사 | 고장력 자동차강판의 상자소둔 열처리 방법 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100892261B1 (ko) | 2007-05-17 | 2009-04-09 | 현대하이스코 주식회사 | 심가공용 냉연강판의 비에이에프 최적 열처리 방법 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5830931B2 (ja) * | 1978-12-30 | 1983-07-02 | 日新製鋼株式会社 | 張出し性の優れた高張力冷延鋼板の製造法 |
JPS5675521A (en) * | 1979-11-26 | 1981-06-22 | Nisshin Steel Co Ltd | Manufacture of cold rolled high tensile steel plate excellent in stretch-flange formability |
JPH03111518A (ja) * | 1989-09-26 | 1991-05-13 | Nippon Steel Corp | 耐ロウ付け割れ性に優れた深絞り用薄鋼板の製造方法 |
JP2971192B2 (ja) * | 1991-06-18 | 1999-11-02 | 新日本製鐵株式会社 | 深絞り用冷延鋼板の製造方法 |
JPH07310142A (ja) * | 1994-05-13 | 1995-11-28 | Nkk Corp | 低品位スクラップ高配合型軟質冷延鋼板およびその製造方法 |
KR0143469B1 (ko) * | 1995-04-24 | 1998-08-17 | 김만제 | 성형성 및 소부경화성이 우수한 상소둔형 냉연강판 제조방법 |
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- 2000-12-05 KR KR10-2000-0073221A patent/KR100514788B1/ko active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100812051B1 (ko) * | 2006-11-08 | 2008-03-10 | 현대하이스코 주식회사 | 고장력 자동차강판의 상자소둔 열처리 방법 |
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Publication number | Publication date |
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KR100514788B1 (ko) | 2005-09-14 |
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